I am having the exact same issue. Ford does not care about it. i have it at a different dealer now. they have had it over a week and still they do not know how to fix it. same with Ford. Ford sucks. We will never buy a Ford again. Have been a Ford family since early 80's.
Been fighting with Ford since June on this issue. Truck was brand new in April. Ford claims there is no fix. Been to dealer 3 times and they do not know what to do. Battery has been replaced; it is driven 60 miles every day for work. Battery is dead overnight. It now sits in front of my house...